US5783002A - Tire tread including incisions - Google Patents

Tire tread including incisions Download PDF

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Publication number
US5783002A
US5783002A US08/765,138 US76513897A US5783002A US 5783002 A US5783002 A US 5783002A US 76513897 A US76513897 A US 76513897A US 5783002 A US5783002 A US 5783002A
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United States
Prior art keywords
tread
cavities
protrusions
trace
incision
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US08/765,138
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English (en)
Inventor
Alain Lagnier
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Compagnie Generale des Etablissements Michelin SCA
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Compagnie Generale des Etablissements Michelin SCA
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Assigned to COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN - MICHELIN & CIE reassignment COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN - MICHELIN & CIE ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LAGNIER, ALAIN
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
    • B60C11/1204—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special shape of the sipe
    • B60C11/1218—Three-dimensional shape with regard to depth and extending direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C11/13—Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
    • B60C11/1204—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special shape of the sipe
    • B60C2011/1213—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special shape of the sipe sinusoidal or zigzag at the tread surface
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S152/00—Resilient tires and wheels
    • Y10S152/03—Slits in threads

Definitions

  • the present invention relates to the tread of a tire intended to travel on snow-covered, icy or wet roads.
  • Such a tread is generally provided with elements in relief, ribs or blocks, separated from each other in circumferential direction and/or transverse direction by transverse and/or circumferential grooves and provided with numerous incisions or slits the widths of which are other than zero but far less than the widths of said transverse and circumferential grooves.
  • French Patent 791 250 shows an example of a slit or incision having an undulated trace on the surface of the tread and even a trace undulated in any cutting plane not containing a generatrix of the undulated surface of the walls of the incision.
  • French Patent 2 025 124 likewise describes incisions the wall surfaces of which are not flat surfaces but have a relief, although remaining substantially parallel to each other, whatever the trace obtained on any cutting plane.
  • the incision shown in said patent has the feature that it has an undulated surface with circular generatrices, as compared with the incision shown in the preceding patent in which the undulated surface is one with so-called linear generatrices, said generatrices being parallel to each other in both cases.
  • incision walls which present a relief for which the generatrices would, for instance, be undulated or zig-zag, the relief then resembling a succession of peaks separated by valleys, the peaks and valleys being undulated, zig-zag or of broken lines in the direction of their lengths.
  • the invention proposes providing at least certain elements in relief of the tread with at least one incision each of the facing walls of which has a surface in relief formed of protrusions and cavities arranged on opposite sides of a central wall surface, each of said protrusions and cavities having, on said central surface, a quadrilateral base and, spaced from said surface, a vertex, the base of a protrusion being completely surrounded by bases of cavities and, conversely, the ba s e of a cavity being completely surrounded by bases of protrusions, the two surfaces of the two walls respectively being identical so as to form the incision with the desired width.
  • the protrusions are arranged on one side of the central surface of the wall, while the cavities are arranged on the other side, said central surface being the geometrical locus of all the bases of the protrusions and the cavities.
  • said central surface is preferably a plane.
  • the protrusions and cavities will preferably have similar geometrical shapes. While these protuberances may have vertices separated from the central plane by distances which differ from each other, they will advantageously, for the same reasons of cost of manufacture, have identical shapes, the central plane being then a median plane.
  • the respective bases of the protrusions and cavities may be squares, rectangles, trapezoids, diamonds, etc., that is to say regular quadrilaterals.
  • the curves joining the vertices of protrusions or cavities respectively to the corresponding bases they will advantageously be circular arcs, semi-parabolas, straight-line segments, or portions of a sinusoid, for instance a portion corresponding to a peak-to-peak half period.
  • the walls of the vulcanized rubber blades defined by the incisions in accordance with the invention are thus provided with geometrical shapes, the faces of each joining the base to the vertex forming an acute angle with the surface of the tread and/or, more particularly, with any plane perpendicular to said surface, contrary to the incision walls described in British Patent 1 150 295, in which the protrusions and cavities are only truncated pyramids with a diamond-shaped base.
  • This type of shape does not make it possible, as in the case of the present invention, to obtain, under the effect of the load applied to a rubber blade between incisions, the production of tangential force induced by said inclination of the incisions, which tangential force is a source for the improvement of the adherence of the tire to slippery, wet and/or icy pavements and has a substantial effect on the phenomena of irregular wear.
  • FIG. 1 is, in a first variant, a diagrammatic view, in perspective, of a wall of an incision in accordance with the invention
  • FIG. 2 is an enlarged diagrammatic view of a part of an incision wall similar to that shown in FIG. 1;
  • FIG. 3 is a diagrammatic view, in perspective, of an incision wall according to a second variant of the invention.
  • FIG. 4 is a diagrammatic view, in perspective, of another variant
  • FIG. 5 is an enlarged diagrammatic view, in perspective, of a part of the wall in accordance with a fourth variant incision according to the invention.
  • FIG. 6 is an enlarged diagrammatic view of a part of a wall in accordance with a fifth variant, which is very similar to that shown in FIG. 5.
  • FIG. 1 shows, in perspective, a wall P of an incision 1, a relief element of the tread 10 in accordance with the invention being possibly provided with one or more incisions 1 of this type.
  • This wall P in three dimensions, can be considered a surface in relief,which is undulated in two directions Ox and Oy, these undulations being characterized by protrusions 2 and cavities 3 located on opposite sides of the middle plane xOy of the wall P.
  • These protrusions and cavities have a domelike shape, produced by the translation, along the trace OA of the wall P on the surface of the tread, of the trace OB of the wall in depth in a plane perpendicular to the surface of the tread and to the center axis of said trace, two traces being, in the example described, identical to each other and undulated.
  • These two traces are formed by the succession of quarter circles Oa 1 , a 1 a 2 , a 2 a 3 , a 3 a 4 , etc. in the case of the trace OA, and Ob 1 , b 1 b 2 , b 2 b 3 , b 3 b 4 , etc. in the case of the trace OB.
  • Each of these two traces, referred to as circularly undulated has, by convention and although not sinusoidal in the strict sense of the term, the same amplitude ⁇ and the same wavelength ⁇ .
  • FIG. 2 shows, on a larger scale, the geometrical shape of a single protrusion 2, while the four neighboring cavities are shown only in part.
  • the surface in relief which is thus shown corresponds to the translation along the trace O'A', of amplitude ⁇ A , and the width O'A' of which is equal to the wavelength ⁇ A (although the trace is not theoretically sinusoidal), of the trace in depth O'B' of amplitude ⁇ B , equal to ⁇ A in the example described (but possibly different in other cases), and of the length O'B' equal to the wavelength ⁇ B , equal to ⁇ A .
  • the central surface is a center plane M, which plane is also the median plane due to the fact that the vertices S of the protrusions and the vertices of the cavities O',A',C' are equidistant from said plane M, the common distance being equal to the common amplitude ⁇ A , ⁇ B of the two traces O'A' and O'B' of the incision on the surface of the tread and in depth respectively.
  • the protrusion 2 of vertex S it has, on the central plane M, a base a 2 b 4 a 5 c 10 , which base b S is square in the case described.
  • the side a 2 b 4 is also the side of the square base b C corresponding to the cavity 3 of vertex O'.
  • the sides B 4 a 5 , a 5 c 10 , c 10 a 2 are also the sides of the bases b C of the cavities 3 of vertex B',C',A' respectively, which bases surround the base corresponding to the protrusion 2 of vertex S.
  • the shape of a protrusion 2 or a cavity 3 it is formed on the one hand of the base and on the other hand of four curved faces which are convex in the case of the parts close to the vertex and concave in the case of the parts close to the base.
  • FIGS. 1 and 2 A single wall has been shown in FIGS. 1 and 2 for the clarity of the drawing.
  • the other wall P' intended to form the incision, has a shape identical to the wall P: it is simply spaced from the wall P by the width e of the incision (FIG. 2).
  • FIG. 3 shows a variant corresponding to a wall P of incision 1 formed of protrusions 2 and cavities 3 in the form of tetrahedrons with rounded vertices generated by the translation, along the trace OA on the tread in zig-zag shape with round vertex (sequence of straight-line segments connected by circular arcs), of a trace in depth OB of the same shape as trace OA, amplitudes and wavelengths being the same for both traces.
  • an incision 1 generated by the translation along a trace OA on the tread which trace is undulated circularly, sinusoidally or otherwise or zig-zag, having an amplitude ⁇ A and a wavelength ⁇ A , of a trace in depth not identical to the trace OA and different by its wavelength ⁇ B and/or by its amplitude ⁇ B .
  • An incision in accordance with the invention may also have, on the tread surface, a trace OA which is undulated circularly, sinusoidally or otherwise, or zig-zag, the amplitude ⁇ A and the wavelength ⁇ A of which are constant over the entire length of the trace, and in depth an undulated or zig-zag trace the amplitude ⁇ B of which, however, decreases as a function of the depth and this with constant wavelength.
  • FIG. 4 shows such an incision in which the amplitude ⁇ B is inversely proportional to the depth of the incision 1, while the wavelength ⁇ B remains constant.
  • the protrusions 2 and the cavities 3 have the shape of tetrahedrons with rounded vertices, said vertices being closer to each other in the bottom part of the incision.
  • an incision 1 which is generated by the translation along a trace OA on the tread which is undulated circularly, sinusoidally or otherwise, or zig-zag, having an amplitude ⁇ A and a wavelength ⁇ A , of a trace in depth of constant amplitude ⁇ B and of wavelength ⁇ B , which varies as a function of the depth.
  • FIG. 5 shows a wall P of an incision 1 in accordance with the invention which no longer corresponds, as in the previous cases, to traces on the surface of the tread and in depth of undulated or zig-zag shape, being formed of a succession of half circles.
  • the wall 1 is formed of protrusions 2 the bases of which in the plane xOy are, for instance, rectangles. For greater clarity, only three protrusions 2 the bases b S of which surround a base b C of the cavity 3 are shown.
  • protrusions and cavities have the same geometrical shape, which can be defined as formed of the base and of four convex curved faces.
  • the cavities 3 have concave curved faces, which makes it possible to find again, in depth, therefore after wear, at any level whatsoever, the same trace as the trace on the surface of the tread, while an incision such as shown in FIG. 5 does not permit this.
US08/765,138 1994-07-05 1995-06-23 Tire tread including incisions Expired - Lifetime US5783002A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9408377A FR2722144B1 (fr) 1994-07-05 1994-07-05 Bande de roulement pour pneumatique
FR9408377 1994-07-05
PCT/EP1995/002455 WO1996001189A1 (fr) 1994-07-05 1995-06-23 Bande de roulement pour pneumatique

Publications (1)

Publication Number Publication Date
US5783002A true US5783002A (en) 1998-07-21

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US08/765,138 Expired - Lifetime US5783002A (en) 1994-07-05 1995-06-23 Tire tread including incisions

Country Status (9)

Country Link
US (1) US5783002A (fr)
EP (1) EP0768958B1 (fr)
CA (1) CA2190880C (fr)
DE (1) DE69505979T2 (fr)
ES (1) ES2125024T3 (fr)
FI (1) FI107598B (fr)
FR (1) FR2722144B1 (fr)
NO (1) NO305354B1 (fr)
WO (1) WO1996001189A1 (fr)

Cited By (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0945248A2 (fr) * 1998-03-24 1999-09-29 Continental Aktiengesellschaft Lamelle hautement stable, moule de vulcanisation pourvu de telles lamelles,bandage pneumatique de véhicule muni d'un profil incluant des incisions obtenues au moyen de telles lamelles
US6202725B1 (en) * 1997-02-27 2001-03-20 Bridgestone Corporation Pneumatic tire and vulcanization mold used for the manufacture thereof
FR2804905A1 (fr) * 2000-02-16 2001-08-17 Michelin Soc Tech Bande de roulement de pneumatique et moule
JP2002154308A (ja) * 2000-07-03 2002-05-28 Soc De Technol Michelin 重荷重支持タイヤ用トレッド
US6412531B1 (en) 1999-07-15 2002-07-02 Michelin Recherche Et Technique S.A. Tire tread having groove walls with compound contours
US6427737B1 (en) * 1998-04-22 2002-08-06 Bridgestone Corporation Pneumatic tire having at least four sipes
US6467517B1 (en) * 1999-06-15 2002-10-22 Michelin Recherche Et Technique S.A. Tire having sacrificial bridging
US20030029537A1 (en) * 2001-07-18 2003-02-13 Wako Iwamura Pneumatic tire
US20030201048A1 (en) * 2000-11-13 2003-10-30 Michelin Recherche Et Technique S.A. Tire tread and molding element for a mould for such a tread
US6719024B2 (en) * 2000-08-24 2004-04-13 The Yokohama Rubber Co., Ltd. Pneumatic tire having sipes
US6786257B1 (en) * 1998-11-20 2004-09-07 Bridgestone Corporation Pneumatic tire including twisted sipe
US20040182487A1 (en) * 2001-09-27 2004-09-23 Michelin Recherche Et Technique S.A. Tire tread
US20040187993A1 (en) * 2001-10-11 2004-09-30 Michelin Recherche Et Technique S.A. Tread comprising incisions and lamella for molding these incisions
US20040216826A1 (en) * 2001-07-09 2004-11-04 Michelin Recherche-Et Technique S.A. Tire tread provided with incisions
US20050103411A1 (en) * 2003-11-18 2005-05-19 Dheur Jean L. Tire with electrically non-conductive tread which contains a self locking electrically conductive rubber strip extending through said tread to its running surface
US20050109438A1 (en) * 2003-11-20 2005-05-26 Collette Jean J. Three-dimensional sipes for treads
US20050121124A1 (en) * 2003-12-03 2005-06-09 Fumihiro Tsubono Pneumatic tire
US20050150581A1 (en) * 2004-01-09 2005-07-14 Sumitomo Rubber Industries, Ltd. Pneumatic tire
US20050211354A1 (en) * 2004-03-25 2005-09-29 Sumitomo Rubber Industries, Ltd. Pneumatic tire
US20060027295A1 (en) * 2004-08-06 2006-02-09 Oliver Knispel Three-dimensional tread sipes and mold blade for forming three-dimensional tread sipes
US20060086445A1 (en) * 2004-10-27 2006-04-27 Sumitomo Rubber Industries, Ltd. Pneumatic tire
US20060118221A1 (en) * 2004-12-08 2006-06-08 Sumitomo Rubber Industries, Ltd. Pneumatic tire
US20060137793A1 (en) * 2004-12-28 2006-06-29 Goodyear Tire And Rubber Company Siped tire tread with high transverse stiffness
US20060169377A1 (en) * 2003-09-29 2006-08-03 Yoshimasa Hashimoto Pneumatic tire
US20060207702A1 (en) * 2005-03-17 2006-09-21 Toyo Tire & Rubber Co., Ltd. Pneumatic tire
US20070199634A1 (en) * 2004-04-09 2007-08-30 Yuji Sakamaki Pneumatic Tire
US20070272337A1 (en) * 2006-05-25 2007-11-29 Lorie Jean Bovaird Pneumatic tire with tread siping
US20080135149A1 (en) * 2005-01-14 2008-06-12 Bridgestone Corporation Pneumatic Tire
US20090255616A1 (en) * 2008-04-15 2009-10-15 The Yokohama Rubber Co., Ltd. Pneumatic tire and method of producing the same as well as tire curing mold
WO2010063558A1 (fr) * 2008-12-05 2010-06-10 Societe De Technologie Michelin Bande de roulement pour pneu comportant des incisions pourvues de protuberances.
US20110168311A1 (en) * 2008-09-11 2011-07-14 Michelin Recherche Et Technique S.A. Variable surface area tire tread and tire
US20110180191A1 (en) * 2008-10-03 2011-07-28 Michelin Recherche Et Technique S.A. Undulated progressive tire mold element
US20120037288A1 (en) * 2004-06-28 2012-02-16 Bridgestone Corporation Pneumatic tire
US20120168049A1 (en) * 2009-05-13 2012-07-05 Brian William Jenkins Tire with a sipe having areas with reduced thickness and apparatus for making the same
ITPD20110087A1 (it) * 2011-03-21 2012-09-22 Pirelli Pneumatico invernale
US20130126061A1 (en) * 2010-02-12 2013-05-23 Luc Bestgen Tire for Two-Wheeled Vehicles, Comprising a Tread Having Sipes
WO2014051527A1 (fr) * 2012-09-25 2014-04-03 Continental Matador Rubber, S.R.O. Bande de roulement de pneumatique et lamelle pour moule de vulcanisation
ITTO20120871A1 (it) * 2012-10-05 2014-04-06 Bridgestone Corp Striscia di battistrada per un pneumatico invernale provvista di intagli tridimensionali
US20140261936A1 (en) * 2013-03-15 2014-09-18 Sumitomo Rubber Industries, Ltd. Pneumatic tire
EP2821258A1 (fr) * 2013-07-02 2015-01-07 Kumho Tire Co., Inc. Pneu
US8939183B2 (en) 2008-12-22 2015-01-27 Compagnie Generale Des Etablissements Michelin Tread with an improved drainage space
US20150041034A1 (en) * 2012-03-14 2015-02-12 The Yokohama Rubber Co., Ltd. Pneumatic Tire
US20150251499A1 (en) * 2014-03-07 2015-09-10 Bridgestone Americas Tire Operations, Llc Tire tread featuring a sipe
US9139048B2 (en) 2005-07-05 2015-09-22 Compagnie Generale Des Etablissements Michelin Tread having a tread pattern with incisions
US20150298508A1 (en) * 2013-03-06 2015-10-22 The Yokohama Rubber Co., Ltd. Pneumatic Tire
WO2015176957A1 (fr) * 2014-05-20 2015-11-26 Apollo Tyres Global R&D B.V. Profil de pneu et forme de moulage
US9387728B2 (en) 2010-10-29 2016-07-12 Compagnie Generale Des Etablissements Michelin Tire tread having a plurality of wear layers
TWI568604B (zh) * 2014-06-24 2017-02-01 Cheng Shin Rubber Industrial Co Ltd Torsional tire saddle with biaxial rotation
US9616716B2 (en) 2011-12-14 2017-04-11 Bridgestone Americas Tire Operations, Llc Three dimensional sipe
US20180072104A1 (en) * 2014-03-07 2018-03-15 Bridgestone Americas Tire Operations, Llc Tire tread featuring a sipe
CN104640718B (zh) * 2012-09-25 2018-04-20 大陆马塔多尔橡胶公司 轮胎胎面和固定在硫化模壳中用于形成轮胎胎面的花纹块中的薄片切口的薄片
US10773556B2 (en) 2014-09-30 2020-09-15 Compagnie Generale Des Etablissements Michelin Tire tread comprising variable thickness sipes with multiple areas of reduced thickness
US11186054B2 (en) 2015-09-30 2021-11-30 Compagnie Generale Des Etablissements Michelin Variable thickness sipes
US11338618B2 (en) * 2015-09-30 2022-05-24 Compagnie Generale Des Etablissements Michelin Egg crate sidewall features for sipes

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EP0810104A1 (fr) * 1996-05-28 1997-12-03 The Goodyear Tire & Rubber Company Bandes de roulement pour pneumatiques ayant des éléments en relief élastomériques munis de fentes
EP1073562B1 (fr) * 1998-03-25 2003-01-22 The Goodyear Tire & Rubber Company Bande de roulement avec incisions de structure tridimensionelle

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JPH04306106A (ja) * 1991-04-02 1992-10-28 Bridgestone Corp 空気入りラジアルタイヤ
JPH04310407A (ja) * 1991-04-05 1992-11-02 Yokohama Rubber Co Ltd:The スタッドレスタイヤ
JPH0558118A (ja) * 1991-08-27 1993-03-09 Yokohama Rubber Co Ltd:The スタツドレスタイヤ
JPH06143941A (ja) * 1992-11-05 1994-05-24 Yokohama Rubber Co Ltd:The 空気入りタイヤ
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US2122736A (en) * 1935-06-13 1938-07-05 Michelin & Cie Tire
US3470404A (en) * 1965-06-30 1969-09-30 Asea Ab Rotors for rotating electric machines
GB1150295A (en) * 1965-09-07 1969-04-30 Dunlop Co Ltd Improvements in Tyres.
US3608602A (en) * 1968-12-03 1971-09-28 Uniroyal Inc Stone rejecting tire tread and mold insert therefor
US4598747A (en) * 1983-04-12 1986-07-08 Compagnie Generale Des Etablissements Michelin Tire tread relief elements having undulated or broken line incisions
US4566514A (en) * 1983-07-08 1986-01-28 Continental Gummi-Werke Aktiengesellschaft Pneumatic vehicle tire
US4794965A (en) * 1987-03-10 1989-01-03 Compagnie Generale Des Etablissements Michelin Tread for radial tire the elements in relief of which are provided with incisions having broken line or undulated line traces in the direction of their depth
JPH04306106A (ja) * 1991-04-02 1992-10-28 Bridgestone Corp 空気入りラジアルタイヤ
JPH04310407A (ja) * 1991-04-05 1992-11-02 Yokohama Rubber Co Ltd:The スタッドレスタイヤ
US5350001A (en) * 1991-05-21 1994-09-27 Semperit Reifen Aktiengesellschaft Tire having a tread surface with fine cut-outs at the tire tread surface
JPH0558118A (ja) * 1991-08-27 1993-03-09 Yokohama Rubber Co Ltd:The スタツドレスタイヤ
JPH06143941A (ja) * 1992-11-05 1994-05-24 Yokohama Rubber Co Ltd:The 空気入りタイヤ

Cited By (107)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6202725B1 (en) * 1997-02-27 2001-03-20 Bridgestone Corporation Pneumatic tire and vulcanization mold used for the manufacture thereof
US6564840B2 (en) * 1998-03-24 2003-05-20 Continental Aktiengesellschaft Lamella of high stability for a vulcanization mold, vulcanization mold with such lamellas, vehicle tire with tire tread in which sipes are produced by such lamellas
EP0945248A3 (fr) * 1998-03-24 2001-01-10 Continental Aktiengesellschaft Lamelle hautement stable, moule de vulcanisation pourvu de telles lamelles,bandage pneumatique de véhicule muni d'un profil incluant des incisions obtenues au moyen de telles lamelles
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DE69505979T2 (de) 1999-05-12
ES2125024T3 (es) 1999-02-16
WO1996001189A1 (fr) 1996-01-18
NO970016L (no) 1997-01-06
FI970006A (fi) 1997-01-02
EP0768958A1 (fr) 1997-04-23
NO305354B1 (no) 1999-05-18
EP0768958B1 (fr) 1998-11-11
FI970006A0 (fi) 1997-01-02
CA2190880C (fr) 2001-05-29
FR2722144A1 (fr) 1996-01-12
FR2722144B1 (fr) 1996-09-27
NO970016D0 (no) 1997-01-03
CA2190880A1 (fr) 1996-01-18
DE69505979D1 (de) 1998-12-17
FI107598B (fi) 2001-09-14

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